<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8" />
        <meta name="viewport" content="width=device-width, initial-scale=1.0" />
        <title>Document</title>
        <link rel="stylesheet" href="./index.css" />
    </head>
    <body>
        <div class="frame">
            <input type="checkbox" name="cb" id="cb" class="cb" />
            <label for="cb" class="button">
                <span class="front">send</span>
                <span class="back">done</span>
            </label>
        </div>
    </body>
</html>
